Peterbilt 579 (2021) Recall: Fire Risk from Damaged Alternator Cable
PACCAR recalls 2021 Peterbilt 579 trucks with MX-13 engines and 160-amp alternators due to a fastener issue that may damage the alternator cable, increasing fire risk. Owners must have the frame fastener replaced free by dealers.
Use caution until it’s fixed
A damaged alternator cable increases the risk of a fire.
Contact the company
What happened, in plain English
PACCAR is recalling certain 2021 Peterbilt 579 trucks with MX-13 engines and 160-amp alternators. A fastener installation issue could damage the alternator cable, raising fire risk. Affected owners should contact dealers for free repairs. Read more at govinfonow.com/recall/80626-peterbilt-579-2021-recall-fire-risk-from-damaged-alternator-cable.
Source Summary by GovInfoNow · govinfonow.com/recall/80626-peterbilt-579-2021-recall-fire-risk-from-damaged-alternator-cable · Updated October 4, 2026 · Official notice: NHTSA #23V423000
Cite this page
“Peterbilt 579 (2021) Recall: Fire Risk from Damaged Alternator Cable.” GovInfoNow, updated October 4, 2026. https://govinfonow.com/recall/80626-peterbilt-579-2021-recall-fire-risk-from-damaged-alternator-cable. Based on NHTSA recall #23V423000 (https://www.nhtsa.gov/recalls?nhtsaId=23V423000).
Why it’s dangerous
A fastener on the front spring bracket may be installed with the head on the outside of the frame rail. This can cause the fastener to chafe and damage the alternator positive cable, increasing the risk of fire.
Who’s affected
Owners of 2021 Peterbilt 579 trucks with MX-13 engines and 160-amp alternators are affected. Truck drivers and fleet operators using these vehicles are most at risk.
How to tell if you have this one
Check if your 2021 Peterbilt 579 has an MX-13 engine and 160-amp alternator. The recall applies to vehicles where the frame fastener was installed with the head on the outside of the frame rail.
- Brand
Peterbilt- Category
Vehicle
What to do — step by step
Contact Dealer for Repair
Dealers will replace the frame fastener and secure the alternator cable at no cost.
August 11, 2023Check for Notification Letter
Owner notification letters are expected to be mailed August 11, 2023.
August 11, 2023
What NHTSA says to do
Dealers will replace the frame fastener and secure the alternator cable, free of charge. Owner notification letters are expected to be mailed August 11, 2023. Owners may contact Peterbilt's customer service at 1-940-591-4220. PACCAR's number for this recall is 23PBD.
How this recall unfolded
Recall timeline
- NHTSA received the defect report
- Owner letters expected (expected, per the notice)
Dates from the agency record only; steps without a date are left out.
Contact Peterbilt
We’ve drafted a message you can send Peterbilt to request your refund or repair — edit it as you like.
Subject: Recall 23V423000 — Peterbilt 579 (2021) Recall: Fire Risk from Damaged Alternator Cable Hello, I own a Peterbilt 579 (2021) Recall: Fire Risk from Damaged Alternator Cable that is covered by recall 23V423000 from Peterbilt. The official recall notice states: Dealers will replace the frame fastener and secure the alternator cable, free of charge. Owner notification letters are expected to be mailed August 11, 2023. Owners may contact Peterbilt's customer service at 1-940-591-4220. PACCAR's number for this recall is 23PBD. I’m writing to arrange the remedy described in the recall (a refund, repair, or replacement as applicable). Could you please tell me the next steps to resolve this? Thank you.
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Where this comes from
The facts (hazard, remedy, dates, manufacturer) are pulled from the official NHTSA recall record. The plain-language summary and step-by-step checklist are written by GovInfoNow to make the official notice easier to act on — they don’t replace it.
- Official source: NHTSA Recall #23V423000 (June 13, 2023)
- Plain-language summary written by qwen3:4b on October 4, 2026, from the official record above. Not reviewed by a person — if it conflicts with the NHTSA notice, the notice is correct. Report an error on this page.
- GovInfoNow is an independent service and is not a government agency. We republish official NHTSA recall data; we don’t issue, amend or administer recalls.